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Sildenafil
Generic sildenafil. Take it when you need it.
- Take about 1 hour before
- Works for about 4 hours
- Licensed US pharmacy
Generic sildenafil tablet
Sildenafil is the active ingredient in Viagra®. It improves blood flow so it’s easier to get and keep an erection when you’re aroused.
- Form
- Tablet
- When to take
- About 1 hour before sex
- Lasts
- About 4 hours
- Made by
- FDA-approved manufacturer; dispensed by a state-licensed pharmacy
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Quick answer
Sildenafil at a glance
Sildenafil is the active ingredient in Viagra®.
How it’s taken: tablet, about 1 hour before sex.
It starts at $49/mo at Surna, with provider care included.
A prescription from a licensed provider is required. It’s an FDA-approved generic, dispensed by a state-licensed pharmacy.
Compare: Sildenafil vs. tadalafil
Updated
How Sildenafil works
Erections depend on blood flow. Sildenafil blocks PDE5, an enzyme that limits that flow, so your body’s natural response to arousal works more easily.
It doesn't create desire on its own. Sexual stimulation is still needed.
What to expect
Everyone responds differently. Your provider checks in and adjusts your plan along the way.
First use
Take it about an hour before sex. A heavy, high-fat meal can slow it down.
First few uses
Your provider may adjust your dose based on how well it works and any side effects.
Ongoing
Refills ship automatically in plain packaging.
Is it right for you?
Your provider makes the final call after reviewing your health history.
Often a good fit
- Trouble getting or keeping an erection
- Sex that’s usually planned a little ahead
- Want a low-cost, well-studied option
Usually not a fit
- Take nitrates for chest pain, like nitroglycerin, or the medication riociguat
- Told by a doctor that sexual activity isn't safe for your heart
- Recent heart attack or stroke
- Use recreational 'poppers' (amyl nitrite)
Not a complete list. Tell your provider about all health conditions and medications.
Possible side effects
Most side effects are mild. Your care team is a message away if something doesn't feel right.
More common
Get medical help right away for
- An erection that lasts more than 4 hours
- Sudden loss of vision in one or both eyes
- Sudden decrease or loss of hearing
- Chest pain, dizziness, or nausea during sex
For a medical emergency, call 911.
How to take it
Always follow the directions on your label and from your provider.
Take it ahead of time
About 1 hour before sex. It can work anywhere from 30 minutes to 4 hours after taking it.
Mind your meal
It may work faster on an empty stomach or after a light meal.
Once a day, max
Don't take it more than once in 24 hours.
Sildenafil questions
Is generic sildenafil the same as Viagra®?
It has the same active ingredient. Sildenafil is the active ingredient in Viagra®, and Surna dispenses it as an FDA-approved generic tablet, which usually costs much less than the brand.
Sildenafil or tadalafil?
Sildenafil works for a few hours. Tadalafil can work for up to 36 hours. Your provider can help you choose based on your routine.
Can I drink alcohol with it?
A drink or two is usually fine, but heavy drinking can make erections harder and increase dizziness.
Related treatments
See if Sildenafil is right for you.
Answer a few questions and a licensed provider will review your options.
Important safety information
Last updated
Do not take this medication if you take nitrates or riociguat, as the combination can cause a sudden, dangerous drop in blood pressure. Sexual activity can strain your heart; stop and get medical help if you have chest pain, dizziness, or nausea during sex. Get emergency care for an erection lasting more than 4 hours, or for sudden vision or hearing loss. Tell your provider about all medications you take, including alpha-blockers and HIV medications. Viagra® is a registered trademark of its owner. Surna Health is not affiliated with its owner.
This is not a complete list of risks. Talk with your provider and read the full prescribing information or medication guide.